Hydraulic clutch and transmission device.



IATENTED OCT. 15, 1907.

0. H. TINGLEY. HYDRiEULIC CLUTCH AND TRANSMISSION DEVICE.

APPLICATION FILED HOV. 30.3.1706v A T71 WM; 19

UNITED S lFNlOXYlLLl-l, ZlF SSOl: II.

HYDRAULIC CLUTCH AND TRANSBHCESEON EEVICEL- Specification of Lette s Patent.

Patented Oct. 15, 1907.

Application filed. November 30, 1906. Serial Bio-345,745;

To all 113 m 1'! 112:5; ."vmu'it.

Be it known that hfmrtnvcr: H. TINGLEY, 2 citizen of the United Stat s. residing at lTnit-tnvillc. in the county of Putnam and State of Isli=. uri. hove invent- ('(l a n w and useful. Hydrauli Clutch and Transmist lun Device, of which the following is a. specification.

This invention relates to a power transmitting device of the hydraulic type whereby power is tninsntittcd from the driving to the driven element thereof through a suitable hydraulic medium which is adapted to be controlled iotlmt the speed of rotation of thc driven clcm'ent can ho gradually varied between maximum and minimum independently of the specd of the driving element. mechanism of this chm-- actor trill be adaptable to a large variety of apparatus and is particularly useful in power systems for self siun of wwcr and promoting th" easy running of the vehicle 7 With these objects in view, and others, as will appf'll as the nature of the invention in better undgrstmd. the invention mmpriscs the various novel feaures of construction and arrangement of parts, which will be more/fuliy described hereinafter and. sot forth with particularity in the claims appended hereto.

In the accompanying drz wing. which illustrates one of the embodiments of the invention, Figure 1 is a central longitudinal sccti ut of the hydraulic clutch and tnmunission device. Fig. l is avcrtimtl transverse OvLlntl taken on line 22 of Fig. 1.

Commtriing parts in the several figures arc-indi- (Al/:(l throughout by similar characters of reference.

notch-ins. tn the drawing. designates the driving and 2 tldriven shafts, and 3 designates gent-rally the hydraulic drive between them. This hydntulic drive or clutch ('lllllPf'lSlS a drum 4 rigidly secured to the driv n lutlt '2 and rotatably mount-d on one end of thc driving shaft 1. The head 5 m the drum is preferably removable for the purpose of permitting act-eve to the interior. Suitably spaced apart in the drum are a plumlily oi wlittlly dispo ul piston cylinders (i in each of which n'tctprocatcs a piston 7 of the. trunk typo. These pisums are connected by means of indrgpfildfflll'; rods 8 to a, mmmon crank pinQ arranged on the inner end 01- the driving shaft 1. By this means, each pirtorrmoves back and forth dncoduring ca -'-h revolution of the driving shaft. There pumps operate on u confined body of liquid, such, for instance. as a suitable lubricating oil. Each cylinder 1. provitl -d with an automatically actuated inlet valve 10 and with an automatically actuated discharge valve 11. Th valves 11 control the discharge puzcager 12 formed in the'drum 4 and extending irom the cylinders radially toward the center of the drum to discharge into a common conduit whereby the lubricant, or other hydraulic medium. is conveyed back to the cylinllerx. By controlling the floviguf lubricant' from the pumps. it is obvious that the trahsr nis ion of power by the pistons thrmigh the hydra 'thc-medium to the driven shaft. on which the piston cylinders are mounted an be varied, as desired.

Surrounding the drum 4 is a fluid tight casing 13 which forms at reservoir for the hydraulic medium, and I supported on the driven shaft-2. Thisrecqivingcham her is provided with packings 20 to prevent leakage of I the high pressure lubricant. Extending from the receiving chamber to the reservoir is a pipe 21 forming a by-pass which is controlled in any suitable manner, as by a valve 22, which is to be operated from the drivers seat. By mean -1 of this cmitrolling valve, the discharge of liquid from the pumps can be retarded to any extent, so that the relative slip between the two elements or pistons and cylinders of the hydraulic clutch can be regulated from maximum to minimum,orvicc-vema. Obviously, when the valve 22 is fully open, the pistons 7 .are free to reciprocate without transmitting motion through thehydraulic medium, and by closing the valve the flow of hydraulic medium is retarded toil greater or i988 cxthnt, 5') that motion will be transmitted to the driven shaft. and when the valve 22 is completely cl sed, the driven shaft will be rotated at the some spec-d its the driving shaft, and the pistons are then idle and tin.- elements of the device entirely clutched.

thereby eliminate shocks, a body of air under ressure is arranged at. a suitable point between the pulnps and the Controlling valve 22, and, by preference, this body of air is contained in a dome 23 communicating with the receiving chmnber ltlthrough the passage 24.

i From the foregoing des ription, taken in connection with the accompanying drawing. the advantages of the 

